Where does “frostproof” come from?

frostproof (English) comes from English proof, from Middle English proof, from Old French prove, from Latin proba, from Latin probāre, from Latin probō, from Latin Probus, from Proto-Indo-European pro-bhwo- — passed , crossed.

frostproof (English): Resistant to frost; To make resistant to frost

Definitions

  1. Resistant to frost; To make resistant to frost

Ancestry of “frostproof”, step by step

frostproof traces back through two separate lines of ancestry.

via English proof

StepLanguageWordMeaning
1EnglishproofAn effort, process, or operation designed to...
2Middle Englishproof
3Old Frenchprove
4Latinprobatest, trial; proof, evidence
5Latinprobāre
6Latinprobōto approve, permit, commend
7LatinProbusgood, serviceable, excellent, superior, able
8Proto-Indo-Europeanpro-bhwo-being in front, prominent
9Proto-Indo-Europeanpro-toward, forward
10Proto-Indo-Europeanpor-to give birth; forward, through; going, passage
11Proto-Indo-Europeanper-before, in front; first; to go through
12Proto-Indo-Europeanpr̥tóspassed , crossed

via English Frost

StepLanguageWordMeaning
1EnglishFrostA cover of minute ice crystals on objects that are exposed to the air. Frost is formed by the same process as dew, except that the temperature of the frosted object is below freezing
2Middle EnglishfrostCold, freezing, or frosty weather; weather that...
3Old Englishfrostproduced by metathesis
4Proto-Indo-Europeanprustósfrost
Every word from Proto-Indo-European pr̥tós